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[1] [2] The presence of the steeple sign supports a diagnosis of croup, usually caused by paramyxoviruses. [3] It can also be defined as the replacement of the usual squared-shoulder appearance of the subglottic area by cone-shaped narrowing just distal to the vocal cords. This is called the steeple or pencil-point sign.
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Croup (/ k r uː p / KROOP), also known as croupy cough, is a type of respiratory infection that is usually caused by a virus. [2] The infection leads to swelling inside the trachea, which interferes with normal breathing and produces the classic symptoms of "barking/brassy" cough, inspiratory stridor and a hoarse voice. [2]
X-ray The first X-ray, taken by its inventor, featured his wife's hand and ring. [s 2] [s 3] [s 4] Shroud of Turin negative: 1898 Secondo Pia: Turin, Italy Negative: Photographic negative of an ancient cloth relic shows details of a scourged and crucified human body [s 2] Organ Player and Singing Girl: 1898 Eugène Atget: Paris, France Gelatin ...
Jacob deGrom had reconstructive surgery to repair a torn ulnar collateral ligament in his right elbow Monday, and Texas Rangers manager Bruce Bochy said the procedure went well. The typical ...
The X-ray images taken may either be still, displayed on an image intensifier or film, or motion images. For all structures except the heart, the images are usually taken using a technique called digital subtraction angiography or DSA. Images in this case are usually taken at 2–3 frames per second, which allows the interventional radiologist ...
In many cases, the production of these images is based on the mathematical procedure tomographic reconstruction, such as X-ray computed tomography technically being produced from multiple projectional radiographs. Many different reconstruction algorithms exist.